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[SCSI] lpfc 8.3.39: Fix driver issues with large lpfc_sg_seg_cnt values 

Signed-off-by: James Smart <james.smart@emulex.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
This commit is contained in:
James Smart 2013-04-17 20:16:05 -04:00 committed by James Bottomley
parent e74c03c8a8
commit 09294d4623
2 changed files with 16 additions and 18 deletions
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3
drivers/scsi/lpfc/lpfc.h
View File

@ -48,6 +48,9 @@ struct lpfc_sli2_slim;
downloads using bsg */
#define LPFC_DEFAULT_PROT_SG_SEG_CNT 4096 /* sg protection elements count */
#define LPFC_MAX_SG_SEG_CNT 4096 /* sg element count per scsi cmnd */
#define LPFC_MAX_SGL_SEG_CNT 512 /* SGL element count per scsi cmnd */
#define LPFC_MAX_BPL_SEG_CNT 4096 /* BPL element count per scsi cmnd */
#define LPFC_MAX_SGE_SIZE 0x80000000 /* Maximum data allowed in a SGE */
#define LPFC_MAX_PROT_SG_SEG_CNT 4096 /* prot sg element count per scsi cmd*/
#define LPFC_IOCB_LIST_CNT 2250 /* list of IOCBs for fast-path usage. */

31
drivers/scsi/lpfc/lpfc_init.c
View File

@ -4739,7 +4739,7 @@ lpfc_sli_driver_resource_setup(struct lpfc_hba *phba)
((phba->cfg_sg_seg_cnt + 2) * sizeof(struct ulp_bde64));
if (phba->cfg_enable_bg) {
phba->cfg_sg_seg_cnt = LPFC_MAX_SG_SEG_CNT;
phba->cfg_sg_seg_cnt = LPFC_MAX_BPL_SEG_CNT;
phba->cfg_sg_dma_buf_size +=
phba->cfg_prot_sg_seg_cnt * sizeof(struct ulp_bde64);
}
@ -4817,7 +4817,7 @@ lpfc_sli4_driver_resource_setup(struct lpfc_hba *phba)
int rc, i, hbq_count, buf_size, dma_buf_size, max_buf_size;
uint8_t pn_page[LPFC_MAX_SUPPORTED_PAGES] = {0};
struct lpfc_mqe *mqe;
int longs, sli_family;
int longs;
int sges_per_segment;
/* Before proceed, wait for POST done and device ready */
@ -4901,6 +4901,17 @@ lpfc_sli4_driver_resource_setup(struct lpfc_hba *phba)
sizeof(struct lpfc_sli_ring), GFP_KERNEL);
if (!phba->sli.ring)
return -ENOMEM;
/*
* It doesn't matter what family our adapter is in, we are
* limited to 2 Pages, 512 SGEs, for our SGL.
* There are going to be 2 reserved SGEs: 1 FCP cmnd + 1 FCP rsp
*/
max_buf_size = (2 * SLI4_PAGE_SIZE);
if (phba->cfg_sg_seg_cnt > LPFC_MAX_SGL_SEG_CNT - 2)
phba->cfg_sg_seg_cnt = LPFC_MAX_SGL_SEG_CNT - 2;
max_buf_size += (sizeof(struct fcp_cmnd) + sizeof(struct fcp_rsp));
/*
* Since the sg_tablesize is module parameter, the sg_dma_buf_size
* used to create the sg_dma_buf_pool must be dynamically calculated.
@ -4912,22 +4923,6 @@ lpfc_sli4_driver_resource_setup(struct lpfc_hba *phba)
(((phba->cfg_sg_seg_cnt * sges_per_segment) + 2) *
sizeof(struct sli4_sge)));
sli_family = bf_get(lpfc_sli_intf_sli_family, &phba->sli4_hba.sli_intf);
max_buf_size = LPFC_SLI4_MAX_BUF_SIZE;
switch (sli_family) {
case LPFC_SLI_INTF_FAMILY_BE2:
case LPFC_SLI_INTF_FAMILY_BE3:
/* There is a single hint for BE - 2 pages per BPL. */
if (bf_get(lpfc_sli_intf_sli_hint1, &phba->sli4_hba.sli_intf) ==
LPFC_SLI_INTF_SLI_HINT1_1)
max_buf_size = LPFC_SLI4_FL1_MAX_BUF_SIZE;
break;
case LPFC_SLI_INTF_FAMILY_LNCR_A0:
case LPFC_SLI_INTF_FAMILY_LNCR_B0:
default:
break;
}
for (dma_buf_size = LPFC_SLI4_MIN_BUF_SIZE;
dma_buf_size < max_buf_size && buf_size > dma_buf_size;
dma_buf_size = dma_buf_size << 1)